Reading at link the you have indicated me now I have understood that it's necessary get the rank "B" to find the fifth secret key. But now the question is: how can I get the rank "B" ? Maybe killing a lot of enemies ?
Kind regards
Thanks

Reading at link the you have indicated me now I have understood that it's necessary get the rank "B" to find the fifth secret key. But now the question is: how can I get the rank "B" ? Maybe killing a lot of enemies ?
Kind regards
Thanks

Your rank improves by killing more enemies and by taking less damage. Alternatively you can unlock and try some of the challenges. There is a challenge where your rank is locked to rank B. If you play that challenge, it's much easier to find the missing keys.

Rainbow Skies is finally available. Download it on the PS Store for PS4, PS Vita and PS3.